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GNSS (Global Navigation Satellite System) continuous operation reference station pier top level mark elevation combined measurement method

A reference station pier and leveling technology, applied in the field of surveying and mapping, can solve the problems of affecting GNSS data reception, real-time navigation and positioning services, low precision, and complicated operations, and achieve the effects of improving surveying efficiency, rigorous mathematical models, and improving joint surveying accuracy

Pending Publication Date: 2022-05-13
山东省国土测绘院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] According to the knowledge of the inventors, the current joint measurement of the height of the GNSS continuous operation reference station mainly adopts methods such as triangular elevation, geometric leveling, and steel ruler measurement, which have problems such as complicated operation and low accuracy; at the same time, the antenna needs to be removed during operation. Directly affect the data reception of GNSS continuous operation reference station and the real-time navigation and positioning service of the reference station network

Method used

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  • GNSS (Global Navigation Satellite System) continuous operation reference station pier top level mark elevation combined measurement method
  • GNSS (Global Navigation Satellite System) continuous operation reference station pier top level mark elevation combined measurement method
  • GNSS (Global Navigation Satellite System) continuous operation reference station pier top level mark elevation combined measurement method

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Embodiment 1

[0036] Embodiment 1 of the present disclosure introduces a method for joint measurement of the height of a pier top leveling mark at a GNSS continuous operation reference station.

[0037] This embodiment proposes a joint measurement method for the height of the pier top level mark of the GNSS continuous operation reference station. The laser tracker is used to directly measure the vertical distance of the antenna chassis nodes, and the leveling network adjustment is performed to obtain the 1985 national elevation value of the pier top level mark. ;Compared with the traditional leveling and elevation joint survey, the difficulty of surveying is greatly reduced, and the surveying efficiency is greatly improved; the antenna chassis node is used as the observation object, without removing the GNSS antenna, and does not affect the navigation and positioning service of the reference station; using a high-precision laser tracker , and introduce the concept of virtual observations to ...

Embodiment 2

[0083] Embodiment 2 of the present disclosure introduces a calculation example of a method for joint measurement of the elevation of the pier top leveling mark of a GNSS continuous operation reference station.

[0084] The purpose of this embodiment is to provide a method for joint measurement of the elevation of the pier top level mark of the GNSS continuous operation reference station. The specific calculation method is as follows: the elevation values ​​of four known points, the height difference between the four nodes of the chassis and the known points, see Table 1:

[0085] Table 1 Observational values ​​of elevation and height difference of known points (unit: m)

[0086]

[0087] Taking the model number antenna as an example, from the external dimensions of the antenna, k is 47.5mm, and h 1 '=h' 2 = h 3 '=h' 4 = 0.0475m. Carry out network adjustment by method among the present invention. Iterate until convergence, H can be obtained 0 =7.9542m, That is to sa...

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Abstract

The invention provides a GNSS (Global Navigation Satellite System) continuous operation reference station pier top leveling mark elevation combined measurement method. The method comprises the following steps: acquiring a vertical distance observation value, a height difference observation value and a virtual observation value of a leveling mark point; constructing an elevation network adjustment model through the acquired height difference observation value and the virtual observation value; according to the elevation network adjustment model and the vertical distance observation value, calculating elevation network adjustment to obtain a GNSS continuous operation reference station pier top level mark elevation value; checking the obtained elevation value of the leveling mark of the pier top of the GNSS continuous operation reference station to realize the elevation combined measurement of the pier top of the GNSS continuous operation reference station; the elevation combined measurement of the GNSS continuous operation reference station pier top is realized, the measurement difficulty is greatly reduced, and the measurement efficiency is improved.

Description

technical field [0001] The disclosure belongs to the technical field of surveying and mapping, and in particular relates to a method for joint measurement of the elevation of a pier top level mark at a GNSS continuous operation reference station. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] The Global Navigation Satellite System (GNSS) continuous operation reference station is an important national spatial data infrastructure and a dynamic, high-precision space and time reference for geospatial positioning, providing efficient and convenient navigation and positioning for various industries Serve. Using traditional leveling methods to maintain the elevation datum is cyclical and difficult. [0004] In order to solve this problem, modern elevation datums are based on high-precision elevation datums (geoid or quasi-geoid), and the dyna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 李国伟高士民张衡朱伟田茂荣张珂陈钰
Owner 山东省国土测绘院
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